Functionalized molded cellulose body and method for producing the same
AssigneeLenzing Aktiengesellschaft
InventorsKurt Christian Schuster, Mohammad Abu Rous, Karl Michael Hainbucher, Doris Richardt, Sigrid Redlinger, Heinrich Firgo, Gert Kroner
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Abstract
The invention relates to a molded cellulose body which includes a functional substance having low impregnation efficiency, to the use thereof and to a method for introducing functional substances of low impregnation efficiency into a molded cellulose body during its production and after the molding step.
Claims32
A molded cellulose body comprising a functional substance having an impregnation efficiency K′ of less than 10, preferably less than 5, wherein the molded cellulose body is produced by a method wherein introduction of the functional substance into a never dried molded cellulose body occurs during manufacture after a molding step.
A molded cellulose body comprising a functional substance distributed in the molded body, wherein the concentration of the functional substance has a continuous, nonconstant distribution with a minimum in a center of the molded body.
A method for introducing a functional substance into a molded cellulose body comprising introducing the functional substance into a never dried molded cellulose body during its manufacture after a molding step.
A method for producing a molded cellulose body from a cellulosic-containing spinning solution comprising the steps of:
- molding said cellulose-containing spinning solution to provide molded cellulose bodies;
- precipitating the molded cellulose bodies;
- washing the molded cellulose body;
- and
- optionally drying the molded cellulose body,
- wherein a functional substance that is electrically neutral or negatively charged is introduced into a never dried moulded cellulose body during its manufacture after the molding step.
Dependencies are inferred from the claim text.